diff --git a/src/Http/HttpClient.cpp b/src/Http/HttpClient.cpp
index d2101abc..16c5c790 100644
--- a/src/Http/HttpClient.cpp
+++ b/src/Http/HttpClient.cpp
@@ -27,7 +27,7 @@ void HttpClient::sendRequest(const string &strUrl, float fTimeOutSec) {
         defaultPort = 443;
         isHttps = true;
     } else {
-        auto strErr = StrPrinter << "非法的协议:" << protocol << endl;
+        auto strErr = StrPrinter << "非法的http url:" << strUrl << endl;
         throw std::invalid_argument(strErr);
     }